Answer: Vasodilation and Vasoconstriction
Step-by-step explanation:
Your blood vessels begin to vasodilate, and by doing so, bring heat to the surface, by rising to the surface. Meaning that your body releases heat, causing your sweat glands to produce sweat, which evaporates to cool you off. Vasoconstriction is where the blood vessels ' blood vessels narrow, meaning less heat will be lost.